Erste Wiener Productiv Genossenschaft der Musik
Instrumentenmacher was founded in 1900 as a worker's
co-operative, taking over the tools of the deceased
Leopold Uhlmann, Jr. Florian Sladek (d. 1918), who had
been trained by Uhlmann, was active in the firm which
flourished in Vienna until 1940.

References

William Waterhouse, The New Langwill Index, Tony
Bingham, London , 1993